Case Study 01: The Regret Research
What Gilovich and Medvec Found About Actions vs. Inactions — and What It Means for Opportunity Decisions
The Study That Changed How We Think About Regret
In 1994, psychologists Thomas Gilovich of Cornell University and Victoria Husted Medvec of Northwestern University published a paper that would become one of the most cited studies in the psychology of decision-making: "The Temporal Pattern to the Experience of Regret."
The study asked a deceptively simple question: do people regret the things they've done, or the things they haven't done?
The answer was not simple. It depended, fundamentally, on when you asked.
The Research Program: Three Studies, One Pattern
Study 1: The Retrospective Survey
Gilovich and Medvec began by asking 77 Cornell undergraduates and elderly community members to name their biggest regrets in life. They then coded the responses into two categories: actions (things the person did that they wish they hadn't) and inactions (things the person didn't do that they wish they had).
The result: 75 percent of the regrets named were inactions — roads not taken, opportunities not pursued, relationships not cultivated, words not said.
This alone was striking. The conventional assumption might be that people regret mistakes they made — things they did. The data showed overwhelmingly that they regret the things they didn't do.
Study 2: The Short-Run vs. Long-Run Split
The retrospective survey, however, asked people to report their overall biggest regrets — which presumably weighted long-run, enduring regrets more heavily. What about shorter-term regrets?
To examine this, the researchers conducted a second study asking people to report their regrets from the past week — recent regrets fresh in memory. Here the pattern reversed: recent regrets were more likely to be actions than inactions.
This produced the central finding that has driven the research program's influence:
- Short run (recent regrets): Actions dominate
- Long run (biggest life regrets): Inactions dominate
Study 3: The Mechanism Investigation
Why does this temporal reversal occur? The third study explored the mechanism.
The researchers proposed that action regrets and inaction regrets have different psychological fates over time:
Action regrets tend to "ameliorate" — they reduce in intensity over time, because: - The act generated learning and information (you now know what happens) - You can construct explanations and justifications ("I did the best I could with what I knew") - The outcome is known and finite — you can close the mental file - Time passes and the consequences diminish
Inaction regrets tend to "exacerbate" — they increase in intensity over time, because: - The counterfactual is infinite — the "what if" has no ceiling - With time, you accumulate evidence of what you could have done (you see others succeed who took the action you didn't) - You can't close the mental file because the question was never answered - The imagination tends to fill in the blank optimistically — we imagine that the action we didn't take would have led to good outcomes
This mechanism — differential psychological processing of action vs. inaction regrets over time — explains why the same event that causes more distress in the short run (action regret) causes less distress in the long run than inaction regret.
Extended Research: What Specific Inactions People Regret Most
Subsequent research expanded and refined these findings. A major study by Mike Morrison and Neal Roese (2011, published in Social Psychological and Personality Science) examined regret patterns in a large nationally representative sample. They found that the most commonly regretted inactions clustered in six domains:
- Education (32.2%): Choices about schooling, degrees, learning opportunities not pursued
- Career (22.3%): Jobs not applied for, promotions not pursued, professional risks not taken
- Romance (15.3%): Relationships not initiated, pursued, or maintained
- Parenting (10.6%): Time not spent, words not said, presence not given
- Self-improvement (5.6%): Health choices, personal development opportunities, habits not built
- Leisure (2.5%): Travel, experiences, activities not pursued
The education and career clusters — which together account for more than half of long-run regrets — are precisely the domains most likely to involve recognizable opportunities that go unacted on. The regret is not for random events outside people's control. It is for opportunities they saw and chose not to pursue.
The Counterfactual Imagination Problem
One of the most psychologically important mechanisms underlying inaction regret is what researchers call the counterfactual imagination problem.
When you act and things go wrong, the counterfactual ("what if I hadn't acted?") runs up against reality: you know what your life was like before, and you can compare. The counterfactual is bounded.
When you don't act, the counterfactual ("what if I had acted?") is unbounded. You have no direct experience of what would have happened. The imagination is free to construct whatever version of the alternative reality it wants — and research on mental simulation consistently shows that people tend to construct optimistic counterfactuals: imagining that the action they didn't take would have led to good outcomes.
This optimistic counterfactual, repeated across years and decades, becomes more vivid and more emotionally compelling over time — not less. The "what if I had moved to that city," "what if I had asked her out," "what if I had taken that job" — these questions remain permanently open, permanently constructed by imagination rather than grounded in reality, and permanently tinged with the optimistic bias that makes them painful.
Action regrets close. Inaction regrets stay open.
What This Implies for Opportunity Decisions
The regret asymmetry research has several specific implications for opportunity action:
Implication 1: Use long-run regret as your decision criterion, not short-run discomfort. The acute discomfort of taking a scary action is temporary. The diffuse pain of an unclosed "what if" can persist for decades. When calibrating whether to act, weight the long-run consequence (which research shows favors action) more heavily than the short-run consequence (which research shows favors inaction).
Implication 2: Act to generate information, not just to achieve the hoped-for outcome. Even if the action produces rejection, it closes the counterfactual loop. You now know what happens when you apply, reach out, or pitch. This is not nothing — knowing is almost always better than imagining, because imagination tends toward optimistic bias.
Implication 3: The domains with the most opportunity are the domains with the most inaction regret. Education and career account for the majority of long-run regrets — and these are exactly the domains where recognized opportunities most often go unacted on. This is not coincidental. These domains have the highest number of clearly recognizable, clearly actionable opportunities that fear most reliably prevents people from pursuing.
Implication 4: Be especially suspicious of inaction that feels "prudent." The most regretted inactions are not usually reckless gambles avoided. They are measured, sensible-seeming decisions not to reach, not to try, not to risk. "I didn't want to bother them." "I didn't feel ready yet." "I was waiting for the right moment." These are the protective rationalizations that inaction regret is built on. When you hear these thoughts, take them as a signal to examine whether you're avoiding action or genuinely deferring it wisely.
A Nuance the Research Is Careful to Preserve
Gilovich and Medvec and subsequent researchers are careful to note that the regret asymmetry finding does not mean inaction is always wrong or action is always right. The finding is statistical — about what most people regret most often. It does not tell you that your specific inaction will be regretted or that your specific action will not be.
What the research tells you is that, in calibrating the fear of action against the cost of inaction, people systematically underweight the long-run cost of inaction because it is diffuse, delayed, and emotionally less vivid in the moment of decision. Knowing this bias exists allows you to correct for it — not to eliminate it, but to factor it consciously into the decision.
The research does not say: always act. It says: when you're not acting because of fear of short-run discomfort, you may be making a decision your future self will evaluate very differently than your current self.
Applying Regret Research to Priya's Decision
Priya's 48-hour deadline created exactly the conditions under which the regret asymmetry is most important to apply.
In the short run, both possible actions (accepting Meridian without full information; waiting and potentially losing Meridian) felt acutely uncomfortable. Action regret felt more vivid than inaction regret because both involved taking a specific, consequential action.
But applying the long-run frame: in five years, which would she regret more — accepting a good opportunity with her eyes open, or declining a good opportunity waiting for a great one that may or may not have arrived?
The regret research predicts that declining the certain good outcome while waiting for the uncertain great one would produce lasting inaction regret — if Cornerstone had offered within the week, she might feel fine; but if Cornerstone had never offered, the "what if I'd taken the Meridian job" counterfactual would have been closed, while the "what if Cornerstone had offered" counterfactual would have been permanent.
Priya's minimum viable action approach — reaching out to both companies before deciding — was itself informed by this logic: take an action that generates real information rather than leaving counterfactuals permanently open.
For discussion: Think of one inaction in your own life that you currently feel a "what if" about. How long has the counterfactual been open? Has your imagination of the alternative future become more or less positive over time? What would it take to close the loop — to either act or permanently release the counterfactual?